/**
 * Copyright (c) 2014,Egret-Labs.org
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Egret-Labs.org nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGRET-LABS.ORG AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL EGRET-LABS.ORG AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

egret_h5 = {};

egret_h5.prefix = "";

egret_h5.loadScript = function (list, callback) {
  var loaded = 0;
  var loadNext = function () {
    egret_h5.loadSingleScript(egret_h5.prefix + list[loaded], function () {
      loaded++;
      if (loaded >= list.length) {
        callback();
      }
      else {
        loadNext();
      }
    })
  };
  loadNext();
}

egret_h5.loadSingleScript = function (src, callback) {
  var s = document.createElement('script');
  if (s.hasOwnProperty("async")) {
    s.async = false;
  }
  s.src = src;
  s.addEventListener('load', function () {
    this.removeEventListener('load', arguments.callee, false);
    callback();
  }, false);
  document.body.appendChild(s);
}

egret_h5.startGame = function () {
  var canvas = document.getElementById(egret.StageDelegate.canvas_name);
  context = egret.MainContext.instance;
  context.rendererContext = new egret.HTML5CanvasRenderer(canvas);
  context.touchContext = new egret.HTML5TouchContext(canvas);
  context.deviceContext = new egret.HTML5DeviceContext();
  context.netContext = new egret.HTML5NetContext();

  //设置屏幕适配策略
  var container = new egret.EqualToFrame();
  var content = egret.Browser.getInstance().isMobile ? new egret.FixedWidth()
      : new egret.NoScale();
  var policy = new egret.ResolutionPolicy(container, content);
  egret.StageDelegate.getInstance().setDesignSize(480, 800, policy);

  context.stage = new egret.Stage(canvas.width, canvas.height);

  egret.MainContext.instance.rendererContext.texture_scale_factor = 1;
  context.run();

  var rootClass;
  if (document_class) {
    rootClass = egret.getDefinitionByName(document_class);
  }
  if (rootClass) {
    var rootContainer = new rootClass();
    if (rootContainer instanceof egret.DisplayObjectContainer) {
      context.stage.addChild(rootContainer);
    }
    else {
      throw new Error("文档类必须是egret.DisplayObjectContainer的子类!");
    }
  }
  else {
    throw new Error("找不到文档类！");
  }
}

egret_h5.preloadScript = function (list, prefix) {
  if (!egret_h5.preloadList) {
    egret_h5.preloadList = [];
  }
  egret_h5.preloadList = egret_h5.preloadList.concat(list.map(function (item) {
    return prefix + item;
  }))
}

egret_h5.startLoading = function () {
  var list = egret_h5.preloadList;
  egret_h5.loadScript(list, egret_h5.startGame);
}